White to Non-White Racial Dissimilarity (5-year estimate) Index for Westchester County, NY was 46.13% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Westchester County, NY reached a record high of 50.99 in January of 2010 and a record low of 46.13 in January of 2022. Trading Economics provides the current actual value, an historical data chart and related indicators for White to Non-White Racial Dissimilarity (5-year estimate) Index for Westchester County, NY - last updated from the United States Federal Reserve on May of 2024.